91+ ECU in 90 Car

[TommyDSM]

Has only done this mod before? I'm trying to locate the Noise Filter for the Tech. Can Anyone Help?

 

[windowrattler]

I believe that the a lot of the electronics on the 90 are different from the 91+. The power transitors are 6 pins instead of 7 and the throttle body and cam angle sensor are different. This is just what I experienced on my two cars.

Jason

 

[Sotarts]

90 ecu must stick with 90 car.
91 - 94 ecu must stick to 91 - 94 car.
95 ecu to 95 car.
96 ecu to 96 car.
97 - 99 ecu to 97 - 99 car.

Manual must stick with manual and auto to auto.

http://www.tmo.com (it's somewhere in there)

I'm sure some people bastardized the properness of usage, but probably with problematic results.